Bicycle



FIG. 1 is a front perspective view of a bicycle showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front elevation view thereof; and,

FIG. 8 is a rear elevation view thereof.

The portions shown in broken lines do not form part of the claimed design. 

The ornamental design for a bicycle, as shown and described. 